Thermo Grudgeball

Round 1 Find ∆Horxn for the reaction of nitrogen gas reacting with oxygen gas to produce nitrogen dioxide. N2(g) + O2(g)  2NO(g) ∆Ho = +180.5 kJ 2NO(g) + O2(g)  2NO2(g) ∆Ho = -114.1 kJ

Round 1 Find the heat of combustion of CH4. The heats of formation are as follows: ∆Hof (CH4(g)) = -74.8 kJ mol-1, ∆Hof (CO2(g)) = -110.5 kJ mol-1, ∆Hof (H2O(g)) = -241.8 kJ mol-1,

Round 1 If ______ is negative and ___________ is positive, a reaction will never be spontaneous.

Round 1 Water boils at 100oC with a molar heat of vaporization of +43.9 kJ. At 100oC, what is the entropy change when water condenses? H2O(g)  H2O(l)

Round 1 In which reaction does the entropy increase and why? A. 2SO2(g) + O2(g)  2SO3(g) B. CO(g) + H2O(g)  H2(g) + CO2(g) C. H2(g) + Cl2(g)  2HCl(g) D. 2NO2(g)  2NO(g) + O2(g)

Round 1